How Much Does Basement Excavation Cost in Minnesota?
Published cost guides put the cost to dig a new basement at about $1,500 to $30,000. One national guide lists $1,500 to $6,000 for a smaller basement and $10,000 to $30,000 for a large one. Hard access or rocky soil can push a dig to $30,000 to $50,000 or more.
A contractor’s cost guide puts basement excavation at $5,000 to $30,000. These ranges are national, since no published Minnesota figures turned up. They are market numbers, not our price list.
Wolf Creek Dirt Works digs basements and foundations for new homes, serving Sturgeon Lake and the area around it. Our basement excavation page shows how the dig works.
What is the cost to dig a basement for a new home?
One national guide says size, depth and terrain set the cost of a basement dig.
| What the guide prices | Market range | Kind of source |
|---|---|---|
| Smaller basement dig | $1,500 to $6,000 | National cost guide |
| Large basement dig | $10,000 to $30,000 | National cost guide |
| Basement dig, hard access or rocky soil | $30,000 to $50,000 or more | National cost guide |
| Basement excavation | $5,000 to $30,000 | Contractor cost guide |
| Foundation dig for new construction | $1,500 to $10,000 | National cost guide |
| House foundation excavation | $5,000 to $12,000 | Contractor cost guide |
What is the basement excavation cost per cubic yard?
One national guide lists residential excavation at $50 to $200 a cubic yard. A cubic yard is 27 cubic feet, so multiply length, width and depth in feet, then divide by 27.
The hole runs wider than the house so the foundation crew has room to work. Say a 30 by 40 foot house gets a 34 by 44 foot hole, 9 feet deep. That is about 500 cubic yards.
For a dig that size, one contractor guide says some contractors prefer a set fee, as they do for foundation excavation and other larger projects.
How does the five-foot frost depth change the dig?
Minnesota Rules set the minimum footing depth for frost at five feet in Zone I. Pine, Carlton, Kanabec, Aitkin and St. Louis Counties are all in Zone I. The five feet holds unless an engineer competent in soil mechanics determines otherwise.
A full basement usually sits deeper than that already. Footings under a crawlspace, a slab or a walkout’s open side generally go to that depth too.
How do soil, rock and water change basement digging cost?
One national guide says soft, loose soil costs less to dig than hard, rocky soil. A contractor guide adds 25 to 50 percent for clay. The national guide says fees can reach $15,000 to $20,000 or more when a foundation dig hits rock.
Inside Sturgeon Lake, the main soil is Grayling sand, which federal soil surveys call excessively drained. Toward Duluth, the city describes mostly clay soils, plus shallow and exposed bedrock and seeps. Peat and wet ground sit in the low spots across the area.
Water in the hole has to come out before the footings go in, and pumping takes time. Mora’s new-home checklist asks for a soil report, if required, and drainage patterns on the site sketch.
How do access, trees and travel change the price?
A contractor guide says difficult site access adds 25 to 50 percent to the total. Many trees on the site can add $500 to $5,000, by the same guide. A national guide says the farther the property sits from the excavation company, the higher the fee to move equipment.
On rural acreage, land clearing and a way in for the trucks often come first. Both are part of site preparation.
Should you keep the dirt or haul it off?
Dirt kept on site can go back as backfill and the grade around the house, which saves hauling it.
The guides disagree on hauling. A contractor guide puts soil disposal at $8 to $25 a cubic yard, depending on distance. A national guide lists $140 to $230 a cubic yard, or $1,400 to $2,300 a truckload.
At the contractor guide’s rate, hauling all 500 yards from the example above would run about $4,000 to $12,500. Ask each bidder to price hauling as its own line.
How does walkout basement excavation cost compare?
None of the guides we checked price a walkout on its own. A walkout sits on a sloped lot, with one wall open to the yard. The hole runs full depth on the high side and shallow on the low side.
That can mean less dirt out of the hole, but more work shaping the slope around the house. The open side generally needs footings at frost depth too.
What does a basement dig price cover?
A dig price pays for the hole itself and moving the dirt out of it. One contractor guide notes that waterproofing and a drainage system may be priced separately.
The footings, the walls and the waterproofing are the foundation contractor’s work, not part of a dig price. Once the walls are up, the dirt goes back in around them and the ground gets graded. Ask whether that backfill and final grade sit in the quote or come as a second visit.
What permits and notices come before the dig?
Minnesota law requires the excavator to notify Gopher State One Call (811) at least 48 hours before digging. That count skips the day of notice, weekends and holidays. The notice can go in no more than 14 calendar days before the dig starts.
Pine County’s building site permit covers new or replacement foundations. The county requires it only in listed areas, such as shoreland and the Kettle River Wild and Scenic area. Shoreland generally reaches 1,000 feet from lakes and 300 feet landward of rivers, creeks and streams.
Where the permit applies, it must be in hand before the foundation goes in. Elsewhere the county requires none, though your township may. The county zoning office or the township can tell you what your lot needs.
Does winter change basement digging cost?
Around Sturgeon Lake, the ground freezes roughly November to April, and excavation slows in winter. One national guide says severe winter weather wears on machinery and slows projects, which raises costs. Spring digs get planned in February and March, which makes late winter a good time to line up quotes.
How do you compare basement excavation quotes?
Ask each bidder the same questions:
- Is it one set price for the dig, or an hourly rate?
- Does the price cover hauling, and where will the dirt go?
- Are backfill and the final grade included?
- What happens to the price if the dig hits rock or water?
- Does the estimate include site cleanup?
On hourly work, one national guide calls $120 to $150 an hour typical, machine and operator included. Get each answer in writing, since quotes that look far apart may price different work.
Ready to price your basement dig?
If an old house or foundation sits where the new one goes, demolition comes first. Our guide to site prep for a new home shows where the dig fits in the build.
Wolf Creek looks at the lot and the plans, then puts a free quote in writing. See how our basement excavation works, or call or text (218) 820-9653.